Series lightstring troubleshooting tool



FIG. 1. Top Plan View of tester.

FIG. 2. Right Side View of Tester.

FIG. 3. Left Side View of Tester.

FIG. 4. Rear End View of Tester.

FIG. 5. Front End View of Tester.

FIG. 6. Rear Plan View of tester; and,

FIG. 7. Perspective View of Tester. 

The ornamental design for a series lightstring troubleshooting tool, as shown. 